US6335697B1 - Simplified method of binary/thermometric encoding with an improved resolution - Google Patents
Simplified method of binary/thermometric encoding with an improved resolution Download PDFInfo
- Publication number
- US6335697B1 US6335697B1 US09/649,676 US64967600A US6335697B1 US 6335697 B1 US6335697 B1 US 6335697B1 US 64967600 A US64967600 A US 64967600A US 6335697 B1 US6335697 B1 US 6335697B1
- Authority
- US
- United States
- Prior art keywords
- signal
- thermometric
- digital
- analog
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000003071 parasitic effect Effects 0.000 abstract description 11
- 230000007704 transition Effects 0.000 abstract description 11
- 230000001934 delay Effects 0.000 abstract description 4
- 101100328957 Caenorhabditis elegans clk-1 gene Proteins 0.000 description 5
- 101100113692 Caenorhabditis elegans clk-2 gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000036039 immunity Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
- H03M7/04—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word the radix thereof being two
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/14—Conversion to or from non-weighted codes
- H03M7/16—Conversion to or from unit-distance codes, e.g. Gray code, reflected binary code
- H03M7/165—Conversion to or from thermometric code
Definitions
- thermometric output signal With respect to parasitic transitions of the analog signal, it would be necessary, in principle, to provide the comparators with memory cells of the master-slave type, i.e. two single, successive flip-flop circuits, which are clocked by two clock signals which are in phase opposition.
- a variant of this embodiment enables the complexity of the means with which the comparators are provided to store their output signals to be reduced by half.
- the present invention can be used in all types of systems requiring a conversion of a binary word into a thermometric signal, it can be particularly advantageously employed in a digital-to-analog converting device. Therefore, the invention also relates to a device intended to convert a digital input signal to an analog output signal, comprising:
- a digital-to-analog converter intended to deliver an analog signal Vin representative of the binary input word IN( 0 :P ⁇ 1)
- thermometric encoder ENC is in accordance with the description given hereinabove. This makes it possible to simplify the whole structure of the device and to reduce its energy consumption, while, enabling it to proces digital input signals having a variation frequency above 100 MHz.
- thermometric output signal of the encoder ENC is substantially rendered immune from parasitic transitions which could affect the P least-significant bits of the digital input signal IN( 0 :M ⁇ 1)
- the output signal OUT also benefits from such an immunity, resulting in an excellent resolution of the conversion carried out by the device.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9910955A FR2798020A1 (en) | 1999-08-31 | 1999-08-31 | SIMPLIFIED BINARY / THERMOMETRIC ENCODING METHOD WITH IMPROVED RESOLUTION |
FR9910955 | 1999-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US6335697B1 true US6335697B1 (en) | 2002-01-01 |
Family
ID=9549453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/649,676 Expired - Lifetime US6335697B1 (en) | 1999-08-31 | 2000-08-28 | Simplified method of binary/thermometric encoding with an improved resolution |
Country Status (6)
Country | Link |
---|---|
US (1) | US6335697B1 (en) |
EP (1) | EP1081864B1 (en) |
JP (1) | JP2001102928A (en) |
KR (1) | KR100678786B1 (en) |
DE (1) | DE60017651T2 (en) |
FR (1) | FR2798020A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6992609B1 (en) * | 2004-09-17 | 2006-01-31 | Pulselink, Inc. | Digital to analog converter |
US20080001644A1 (en) * | 2006-06-30 | 2008-01-03 | Abel Christopher J | Phase interpolator with output amplitude correction |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3400389A (en) * | 1963-10-11 | 1968-09-03 | Olympia Werke Ag | Code conversion |
US4804940A (en) * | 1985-03-25 | 1989-02-14 | Hitachi, Ltd. | Resistor and electron device employing the same |
US5606318A (en) * | 1994-09-30 | 1997-02-25 | Honeywell Inc. | Apparatus for conversion of scaled binary data |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB233171A (en) * | 1924-06-13 | 1925-05-07 | Lawrence Robert Callum | A direction indicator for day and night use on road vehicles |
US5283580A (en) * | 1992-09-28 | 1994-02-01 | Motorola, Inc. | Current/resistor digital-to-analog converter having enhanced integral linearity and method of operation |
US5345234A (en) * | 1993-08-31 | 1994-09-06 | Advanced Micro Devices Inc. | Method and apparatus for combining a flash analog to digital converter with digital to analog functions |
JP3247810B2 (en) * | 1994-10-07 | 2002-01-21 | 三菱電機株式会社 | Bar graph decoder |
CA2134310A1 (en) * | 1994-10-25 | 1996-04-26 | Pier L. Bortot | Wideband digital peak detector |
US5706008A (en) * | 1996-03-01 | 1998-01-06 | Analog Devices, Inc. | High bandwidth parallel analog-to-digital converter |
-
1999
- 1999-08-31 FR FR9910955A patent/FR2798020A1/en not_active Withdrawn
-
2000
- 2000-08-28 US US09/649,676 patent/US6335697B1/en not_active Expired - Lifetime
- 2000-08-29 DE DE60017651T patent/DE60017651T2/en not_active Expired - Lifetime
- 2000-08-29 EP EP00203010A patent/EP1081864B1/en not_active Expired - Lifetime
- 2000-08-30 KR KR1020000050626A patent/KR100678786B1/en not_active Expired - Fee Related
- 2000-08-31 JP JP2000264237A patent/JP2001102928A/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3400389A (en) * | 1963-10-11 | 1968-09-03 | Olympia Werke Ag | Code conversion |
US4804940A (en) * | 1985-03-25 | 1989-02-14 | Hitachi, Ltd. | Resistor and electron device employing the same |
US5606318A (en) * | 1994-09-30 | 1997-02-25 | Honeywell Inc. | Apparatus for conversion of scaled binary data |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6992609B1 (en) * | 2004-09-17 | 2006-01-31 | Pulselink, Inc. | Digital to analog converter |
US20080001644A1 (en) * | 2006-06-30 | 2008-01-03 | Abel Christopher J | Phase interpolator with output amplitude correction |
US7425856B2 (en) * | 2006-06-30 | 2008-09-16 | Agere Systems Inc. | Phase interpolator with output amplitude correction |
Also Published As
Publication number | Publication date |
---|---|
JP2001102928A (en) | 2001-04-13 |
DE60017651D1 (en) | 2005-03-03 |
EP1081864B1 (en) | 2005-01-26 |
FR2798020A1 (en) | 2001-03-02 |
EP1081864A1 (en) | 2001-03-07 |
KR100678786B1 (en) | 2007-02-05 |
DE60017651T2 (en) | 2005-12-22 |
KR20010021462A (en) | 2001-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: U.S. PHILIPS CORPORATION, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GUYOT, BENOIT;JANIK, JEAN-MARIE;REEL/FRAME:011282/0399 Effective date: 20000914 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: NXP B.V., NETHERLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:U.S. PHILIPS CORPORATION;REEL/FRAME:018635/0755 Effective date: 20061127 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
AS | Assignment |
Owner name: PHILIPS SEMICONDUCTORS INTERNATIONAL B.V., NETHERL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONINKLIJKE PHILIPS ELECTRONICS N.V.;REEL/FRAME:043951/0127 Effective date: 20060928 Owner name: NXP B.V., NETHERLANDS Free format text: CHANGE OF NAME;ASSIGNOR:PHILIPS SEMICONDUCTORS INTERNATIONAL B.V.;REEL/FRAME:043951/0611 Effective date: 20060929 |